Adhesion characteristics of copper thin film deposited on PET substrate by electron cyclotron resonance–metal organic chemical vapor deposition

Jeon, Bup Ju; Lee, Sangwha; Lee, Joong Kee

doi:10.1016/j.surfcoat.2007.08.015

Cited by 15 publications

(8 citation statements)

References 25 publications

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“…The occurrence of a delamination patch at the interface between the film and the substrate has a negative effect by preventing this delocalizing mechanism to occur. In addition to all possible surface treatments and activation methods providing high adhesion, the presence of a substrate roughness has been shown to delay interfacial crack propagation [318][319][320]. When fracture is caused by a brittle mechanism such as intergranular cleavage, the presence of the compliant substrate does little to postpone rupture [314].…”

Section: Fracture and Fatigue Mechanismsmentioning

confidence: 99%

Failure of metals III: Fracture and fatigue of nanostructured metallic materials

2016

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a b s t r a c tPushing the internal or external dimensions of metallic alloys down to the nanometer scale gives rise to strong materials, though most often at the expense of a low ductility and a low resistance to cracking, with negative impact on the transfer to engineering applications. These characteristics are observed, with some exceptions, in bulk ultra-fine grained and nanocrystalline metals, nano-twinned metals, thin metallic coatings on substrates and freestanding thin metallic films and nanowires. This overview encompasses all these systems to reveal commonalities in the origins of the lack of ductility and fracture resistance, in factors governing fatigue resistance, and in ways to improve properties. After surveying the various processing methods and key deformation mechanisms, we systematically address the current state of the art in terms of plastic localization, damage, static and fatigue cracking, for three classes of systems: (1) bulk ultra-fine grained and nanocrystalline metals, (2) thin metallic films on substrates, and (3) 1D and 2D freestanding micro and nanoscale systems. In doing so, we aim to favour cross-fertilization between progress made in the fields of mechanics of thin films, nanomechanics, fundamental researches in bulk nanocrystalline metals and metallurgy to impart enhanced resistance to fracture and fatigue in high-strength nanostructured systems. This involves exploiting intrinsic mechanisms, e.g. to enhance hardening and rate-sensitivity so as to delay necking, or improve grain-boundary cohesion to resist intergranular cracks or voids. Extrinsic methods can also be utilized such as by hybridizing the metal with another material to delocalize the deformation -as practiced in stretchable electronics. Fatigue crack initiation is in principle improved by a fine structure, but at the expense of larger fatigue crack growth rates. Extrinsic toughening through hybridization allows arresting or bridging cracks. The content and discussions are based on experimental, theoretical and simulation results from the recent literature, and focus is laid on linking microstructure and physical mechanisms to the overall mechanical behavior.

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Section: Fracture and Fatigue Mechanismsmentioning

confidence: 99%

Failure of metals III: Fracture and fatigue of nanostructured metallic materials

2016

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“…5(a), PC sheet can identify the main peaks of C1s, O1s and Si2p which consists of SiO 2 and organic carbon. Generally, when polymers such as PET or PE are exposed to plasma condition, the surface of the substrate is generated by carbonyl or ester groups, which changes the surface characteristics [12]. Also, plasma treatment can affect changes in surface composition, but it is not easy to change the haze by plasma treatment because of its small impact on surface structure changes.…”

Section: Discussionmentioning

confidence: 99%

Control of Optical Properties by the Stepwise Chemical and Plasma Spray Treatment of Polycarbonate

Jeon

2018

Appl. Sci. Converg. Technol.

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Using the Polycarbonate (PC) polymer sheet, the change in optical properties was compared by changing the surface shape with the primary chemical surface treatment and plasma spray treatment. Plasma treatment affects surface composition changes and has a small effect on surface structure changes. Changes in surface structure are important to control the optical characteristics of the PC polymer sheet. Thus, it was possible to control changes in surface composition and changes in surface structure through secondary plasma treatment after primary chemical treatment. The primary chemical treatment had a small effect on changes in the chemical composition of the surface, but the surface roughness was influenced by swelling. The secondary plasma spray treatment affected optical properties changes, which allowed control of changes in surface structure after primary chemical treatment. At the same time after the first chemical treatment, the secondary plasma treatment was easy to control of optical properties by changing the surface structure as well as the surface properties due to changes in chemical composition by surface cross-linking reaction.

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“…The epoxy was hardened on a hot plate maintained at 60 °C for 90 min. The adhesive strength measurement was performed by a z-axis pull-off test 53 using a commercially available tensile tester (BMS Tech, Korea). The pulling speed of the stud was fixed at 2 mm/min.…”

Section: Methodsmentioning

confidence: 99%

Simultaneous photoadhesion and photopatterning technique for passivation of flexible neural electrodes based on fluoropolymers

Kim

Jung

2020

Sci Rep

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Herein, we introduce a method to simultaneously photoadhere a photocrosslinkable polymer to a plasma-treated fluoropolymer while photopatterning the photocrosslinkable polymer via a single-photo-exposure as a new electrode passivation technique. Photoadhesion was determined to result from plasma-generated radicals of the plasma-treated fluoropolymer. Crystallinity of the fluoropolymer was analysed to determine the photoadhesion strength through its effects on both the formation of radicals and the etching of fluoropolymers. Passivation feasibility of simultaneous photoadhesion and photopatterning (P&P) technique were demonstrated by fabricating an Au electrocorticography electrode array and modifying the electrode with electro-deposited metallic nanoparticles. Adhesion of sputter-deposited Au to the fluoropolymer was dependent on mechanical interlocking, indicated by the formation of Au clusters which are typically influenced by the surface temperature during the sputter-deposition and the glass transition temperature of the fluoropolymer. The adhesion of Au to the fluoropolymer without an additional adhesion promotor and the proposed P&P passivation technique would help prevent detachment of the electrode and the delamination of the passivation layer in fluoropolymer-based neural electrode.

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Adhesion characteristics of copper thin film deposited on PET substrate by electron cyclotron resonance–metal organic chemical vapor deposition

Cited by 15 publications

References 25 publications

Failure of metals III: Fracture and fatigue of nanostructured metallic materials

Failure of metals III: Fracture and fatigue of nanostructured metallic materials

Control of Optical Properties by the Stepwise Chemical and Plasma Spray Treatment of Polycarbonate

Simultaneous photoadhesion and photopatterning technique for passivation of flexible neural electrodes based on fluoropolymers

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